Y+ Calculator vs 1Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Y+ Calculator
This app calculates the necessary grid spacing for computational fluid dynamics (CFD) simulations. It helps engineers determine near-wall cell height for accurate viscous flow computations. Supports both SI and Imperial units.
- Calculate grid spacing for target y+ values
- Supports viscous CFD computations
- Works in SI or Imperial units
- Resets to sea-level conditions
- Based on established fluid mechanics theory
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Y+ Calculator is a handy tool for calculating the grid spacing at a wall to achieve a target y+ value for viscous computational fluid dynamics (CFD) computations. Simply specify the flow conditions, the desired y+ value, and compute your grid spacing. If you are an engineer running viscous CFD computations, achieving a target value for y+ in your grid is essential for both resolved and wall function grids for accurate results. Save time by computing your near-wall cell height for the boundary layer before generating your grid. The Y+ Calculator works in either SI or Imperial units and quickly resets to sea-level conditions. This utility is brought to you by Cadence Design Systems. Note: Computations are based on flat-plate boundary layer theory from Frank M. White’s Fluid Mechanics 5th edition, page 467.
1Calc
This app offers a streamlined calculator experience with a history feature to review past calculations. It boasts a modern design with customizable themes and ensures a premium user experience by being ad-free for premium users. Enhanced percentage calculation logic provides accurate results.
- History functionality
- Customizable themes
- Ad-free premium experience
- Accurate percentage calculation
- Smart and modern design
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- Very simple but highly efficient - History functionality, view your past calculations - Lots of theme to match your personality - No Ads for premium user experience - Updated business logic for percentage (%) calculation - Percentage Calculation now comply with google web calculator - Smart and modern design style - 1Calc is a pro grade calculator plus lots of functionality. Privacy Policy: https://izen.fun/apps/app_data_privacy_policy.html Terms of Service: https://izen.fun/apps/app_data_terms_of_service.html If you need any help, please contact us asimoxo@outlook.com
Screenshots
Verdict
The clearest difference is rating: Y+ Calculator at 3.0 against 1Calc's 2.0. Y+ Calculator also leads on in-app purchases (none vs 3) and ads (none vs shown). 1Calc's advantage is update cadence (fortnightly vs every 8 months). On price and ratings volume there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 1Calc sells 3 in-app purchases, starting at $0.99 per month. Y+ Calculator asks for nothing beyond the download.
Y+ Calculator holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Y+ Calculator ships an update every 8 months, 1Calc fortnightly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Y+ Calculator | 1Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 8 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Cadence Design Systems, Inc. | Asim Roy |
In-app purchases
Y+ Calculator
No in-app purchases
1Calc
- Monthly$0.991 Month
- Yearly$3.991 Year
- Lifetime$8.99
